You shouldn't throw that old vase away. It might be ........ a lot of money.

• cost

• earn

• value

• worth

My grandmother's just got a smartphone, but she doesn't know how ........ it.

• use

• to use

• using

• used

My dentist encouraged ........ my teeth more often.

• to clean

• to clean me

• me to clean

• clean

Rhinoceroses have very poor ........ .They can only see clearly a few metres in front of them.

• hearing

• sound

• taste

• vision

Some people believe that it is not acceptable to ........ on animals in laboratories.

• experiment

• explore

• observe

• research

I tried on two pairs of jeans, but ........ of them looked very good on me.

• both

• all

• neither

• none

I didn't have any birthday cake because there was only ........ left.

• few

• a few

• little

• a little

When it's hot in summer, we usually just have ........ instead of blankets.

• carpets

• cushions

• rugs

• sheets

We won't be able to see the film, unless we ........ nearer the screen.

• sit

• sat

• will sit

• would sit

Keira ........ to the cinema if she'd known that it was a science fiction film.

• won't have gone

• won't go

• wouldn't have gone

• wouldn't go